1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natali 33 [55]
3 years ago
15

Traffic along a stretch of road moves at an average speed that varies inversely with the number of cars on it. When there are 15

00 cars, the average speed is 45 mi/h. What is the average speed when there are 1800 cars?
Mathematics
1 answer:
RSB [31]3 years ago
7 0

Answer:

37.5 miles per hour

Step-by-step explanation:

The traffic along a stretch road moves at an average speed that carried inversely as the number of cars

Average speed= k/number of cars.

When there are 1,500 cars the average speed is 45

The first step is to calculate the constant k

45= k/1500

k = 1,500 × 45

k= 67,500

Therefore the average speed when there are 1,800 cars can be calculated as follows

Average speed= 67,500/1,800

= 37.5 miles per hour

Hence the average speed is 37.5 moles per hour

You might be interested in
Name the postulate or theorem you can use to prove TKS=TLR
OlgaM077 [116]

Answer:

ASA postulate

Step-by-step explanation:

To prove two triangles are congruent, you need 3 congruent parts in one of the patterns ASA, AAS, SSS, or SAS. Place your pencil on one vertex of the triangle then trace the figure. As you come to each congruent part, write either A for angle or S for side depending on what the part is. After doing so, you will see the pattern A - S - A since a side is congruent between two angles.

8 0
3 years ago
Perry borrows $350 at a simple interest rate of 4.5%. Perry pays back the loan in 30 months. How much interest does Perry pay on
Nitella [24]

Answer: the interest on the loan is $39.38

Step-by-step explanation:

The formula for determining simple interest is expressed as

I = PRT/100

Where

I represents interest paid on the loan.

P represents the principal or amount taken as loan

R represents interest rate

T represents the duration of the loan in years.

From the information given,

P = $350

R = 4.5%

There are 12 months in a year. Converting 30 months into years, it becomes

30/12 = 2.5. so

T = 2.5 years

Therefore

I = (350 × 4.5 × 2.5)/100

I = $39.38

3 0
3 years ago
Help me answer pls :)<br><br><br> what is the value of y when x=43
Leona [35]

Answer:

87

Step-by-step explanation:

f(x) = 2x+1

6 0
3 years ago
2x-1/4(12x+4)=3<br><br><br><br> 2x-1/4 (12x+4)=3
eduard
<span>2x-1/4(12x+4)=3
</span>⇒ 2x -1/4*(12x) -1/4*4= 3 (distributive property)
⇒ 2x -3x -1= 3
⇒ -x= 3+1
⇒ -x= 4
⇒ x= -4
<span>
Final answer: x=-4~

</span>
3 0
3 years ago
How do i find the slope of a line that passes through a given point and is parallel or perpendicular to another given point?
elena-14-01-66 [18.8K]

There's no such thing as parallel or perpendicular "to a point".  A problem like that
will always want the new line to be parallel or perpendicular to another <em><u>line</u></em>.

-- If the new line is parallel to the given line, then they have the <em><u>same</u></em> slope.

-- If the new line is perpendicular to the the given line, then the slope of the
new line is [ <em><u>1 / slope of the given line</u></em> ].

In either case, you now have the slope of the new line and a point on it. 
From there, you should have no trouble finding its equation.


5 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the inequality. Graph the solution set. 26 + 6b 2(3b + 4)
    14·2 answers
  • Julie had three wheels from bikes and things that she stacked against the shed. Each wheel fitted so neatly together that Julie
    6·1 answer
  • MegaRock produces quick setting concrete mix. Production of 205,880 tons was started in April, 194,080 tons were completed. Mate
    8·1 answer
  • How do you do this problem?
    13·2 answers
  • Jessica is selling books during the summer, can someone help out
    9·1 answer
  • 16^5/4 times 16^1/4/(16^1/2)^2
    13·1 answer
  • In the example, 16 is what percent of 80? , what does 16 represent in the percent proportion​
    6·1 answer
  • Help me please please ASAP
    9·2 answers
  • 7 is what percent of 154?
    13·1 answer
  • Can someone please help me
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!